@@ -65,6 +65,8 @@ int xen_smp_intr_init(unsigned int cpu)
char *resched_name, *callfunc_name, *debug_name;
resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu);
+ if (!resched_name)
+ goto fail;
per_cpu(xen_resched_irq, cpu).name = resched_name;
rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR,
cpu,
@@ -77,6 +79,8 @@ int xen_smp_intr_init(unsigned int cpu)
per_cpu(xen_resched_irq, cpu).irq = rc;
callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu);
+ if (!callfunc_name)
+ goto fail;
per_cpu(xen_callfunc_irq, cpu).name = callfunc_name;
rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR,
cpu,
@@ -90,6 +94,8 @@ int xen_smp_intr_init(unsigned int cpu)
if (!xen_fifo_events) {
debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu);
+ if (!debug_name)
+ goto fail;
per_cpu(xen_debug_irq, cpu).name = debug_name;
rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu,
xen_debug_interrupt,
@@ -101,6 +107,8 @@ int xen_smp_intr_init(unsigned int cpu)
}
callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu);
+ if (!callfunc_name)
+ goto fail;
per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name;
rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR,
cpu,
kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Ensure the allocation was successful by checking the pointer validity. Signed-off-by: Kunwu Chan <chentao@kylinos.cn> --- arch/x86/xen/smp.c | 8 ++++++++ 1 file changed, 8 insertions(+)